Siemens SINUMERIK 828D Function Manual page 1009

Block FC TM_TRANS may be started only with "Start" parameter = "TRUE" if an activation signal for the
appropriate interface (DB 71, DB 72, DB 73 in word 0) for this transfer has been supplied by the tool
management function.
When this job is executed correctly, the output parameter "Ready" contains the value TRUE.
The user must then set the"Start" parameter to FALSE or not call the block again.
If the "Ready" parameter = FALSE, the error code in the "Error" parameter must be interpreted (see Call example
FC 8 and timing diagram).
If the error code = 0, then this job must be repeated in the next PLC cycle (e.g. "Start" remains set to "TRUE").
This means that the transfer operation has not yet been completed.
If the user assigns a value of less than 100 to the Parameter "Status", then the associated interface in data block
DB 71 or DB 72 or DB 73, word 0 is deactivated (process completed). The appropriate bit for the interface is set
to 0 by FC 8.
The "Start" parameter does not need a signal edge for a subsequent job. This means that new parameters can
be assigned with "Start = TRUE" immediately when "Ready = TRUE" is received.
Asynchronous transfer
To ensure that changes in the position of a tool are automatically signaled from PLC to tool management (e.g.
power failure during an active command or independent changes in the position by the PLC), block FC 8
TM_TRANS with "TaskIdent": = 4 or 5 is called. This call does not require interface activation by tool
management.
If parameter "TaskIdent" = 5 the tool management reserves the location in addition to changing the position. The
location is only reserved if the tool has been transported from a real magazine to a buffer storage.
A relevant NC channel must be parameterized in the "TaskIdentNo" parameter.
The previous position of the tool is specified in parameters "OldToolMag", "OldToolLoc"; the current position of
the tool is specified in parameters "NewToolMag", "NewToolLoc". Status = 1 must be specified.
With status 5, the specified tool remains at location "OldToolMag", "OldToolLoc". This location must be a buffer
(e.g. spindle). The real magazine and location must be specified in the parameters "NewToolMag",
"NewToolLoc"; the location is at the position of the buffer. This procedure must always be used if the tool
management is to be informed of the position of a specific magazine location. This procedure is used for
alignment in search strategies.
Note
A cancellation of a transfer (e.g. through an external signal RESET) is not permitted. The
"Start" parameter must always retain the 1 signal until the "Ready" and/or "Error" parameters
<> 0.
An error code <> 0 indicates incorrect parameterization.
Note
For further details on tool management (also with regard to PLC) refer to the Description of
Functions Tool Management. In addition, PI services for tool management via FB 4, FC 7
and FC 22 are available.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
P3: Basic PLC Program for SINUMERIK 840D sl
13.13 Block descriptions
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